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The reaction involved is 3 moles of barium chloride + 2 moles of sodium phosphate gives 1 mole of barium phosphate + 6 moles of sodium chloride HERE WE NEED TO FIND LIMITING FACTOR i.e if 0.6 moles of barium chloride react it needs 0.4 moles of sodium phosphate which is more than provided. if 0.2 moles of sodium phosphate reacts it needs only 0.3 moles of barium chloride. so the limiting factor is SODIUM PHOSPHATE. 2 moles sodium phosphate =1 mole barium phosphate acc. to reaction 0.2 moles of sodium phosphate gives 0.1 MOLE OF BARIUM PHOSPHATE. HOPE THE ANSWER IS RIGHT...